Cover for floor warming system



FIG. 1 is a perspective view of a cover for floor warming system showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof; and,

FIG. 5 is a side view thereof. 

The ornamental design for a cover for floor warming system, substantially as shown and described. 